Motion detector sensor with ambient light measurement. For automatic switching of consumers based on movement and brightness. Switch function available at any time. Detection with animal corridor. In combination with dimmer module flex: dimming function of the lighting and optional light value storage. With timer-controlled basic lighting function. With timer-controlled night glare protection function. With activatable switch-off pre-warning for stairwell operation. Compatible with all flex modules. Works with free@home Wireless. Remotely controllable via Bluetooth using a smartphone/tablet app. Programming via Bluetooth with the Busch-free@home app or through the web interface of the system access point. Extension of the detection area through main/secondary station combination. Additional switching option via button input on the flush-mounted module. Timer with astro function. Automatic summer/winter time adjustment (can be disabled). With continuous light / continuous off function. With teach-in function for the brightness switching threshold. With brightness-independent test operation for evaluating the detection area. With detection display in test operation. Monitoring density: 14 sectors with 56 switching segments. Switch-off delay: adjustable from 10 seconds to 30 minutes or short pulse of 1 second. For relay module flex, single, 64811 U. For relay module flex, double, 64821 U. For e-contact module flex, single, 64814 U. For LED touch dimmer module flex, 64851 U. For secondary station module flex, 64891 U. Installation height: 22 mm. Please order the corresponding flush-mounted module separately. The range specifications refer to an ambient temperature of 21 °C. Design line: Busch-balance® SI. Product series: Busch-flexTronics® Wireless, Busch-free@home® Wireless, Busch-free@home®.